---
title: "Marsh McLennan Agency vs Pie Insurance: Professional Liability (E&O) Insurance"
description: "The provider pages describe distinct line scope and a contact-led versus website quote route."
canonical: "https://spot.insure/compare/marsh-mclennan-agency-vs-pie-insurance/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "marsh-mclennan-agency-vs-pie-insurance"
provider-a: "marsh-mclennan-agency"
provider-b: "pie-insurance"
coverage-line: "professional-errors-omissions"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

[Human-readable page](https://spot.insure/compare/marsh-mclennan-agency-vs-pie-insurance/professional-errors-omissions)

## Agent Guide

**What this page is:** Focused comparison of Marsh McLennan Agency and Pie Insurance for Professional Liability (E&O) Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for Professional Liability (E&O) Insurance questions about Marsh McLennan Agency versus Pie Insurance. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Marsh McLennan Agency vs Pie Insurance for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, Marsh McLennan Agency or Pie Insurance?
- What does Marsh McLennan Agency or Pie Insurance publish about Professional Liability (E&O) Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Professional Liability (E&O) Insurance from Marsh McLennan Agency or Pie Insurance?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Marsh McLennan Agency and Pie Insurance.
- Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- "Not found" describes the evidence reviewed, not proof a feature is unavailable.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-09-30. Editorial policy: /editorial-policy.

**Related pages:**
- [Marsh McLennan Agency vs Pie Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-pie-insurance) — parent: all coverage lines for this pair
- [Professional Liability (E&O) Insurance guide](https://spot.insure/coverage/professional-errors-omissions) — coverage explainer for this line
- [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) — provider profile (evidence)
- [Pie Insurance profile](https://spot.insure/insurance-providers/pie-insurance) — provider profile (evidence)
- [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs Pie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-pie-insurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Pie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-pie-insurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [At-Bay vs Pie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-pie-insurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Beazley vs Pie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-pie-insurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)

# Marsh McLennan Agency vs Pie Insurance: How Do They Compare for Professional Liability (E&O) Insurance?

The provider pages describe distinct line scope and a contact-led versus website quote route.

## Research Scope and Use

Use this comparison to evaluate Marsh McLennan Agency and Pie Insurance for Professional Liability (E&O) Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Summary

Marsh McLennan Agency names errors and omissions plus separate architects-and-engineers and lawyers professional lines; Pie describes E&O as protection for legal fees, costs, and damages tied to harmful advice or services. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance")

## What Is Marsh McLennan Agency?

Marsh McLennan Agency provides business insurance and employee health and benefits, alongside retirement, wealth, and private-client services across the United States and Canada. Its US small-business page lists six common coverage types and directs buyers to request a personalized quote by phone; the insurer and terms for a specific placement must be confirmed in the proposal. [1](https://www.marshmma.com/us/mma/about-us.html "Who We Are") [2](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions")

[Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency)

## What Is Pie Insurance?

Pie suits small businesses seeking workers’ compensation with online quoting and pay-as-you-go billing based on reported payroll, without an initial deposit; firms needing a broad technology or executive program should look elsewhere. [4](https://www.pieinsurance.com/legal "Legal") [5](https://www.pieinsurance.com/workers-comp "Workers’ Comp Insurance For Small Businesses") [6](https://www.pieinsurance.com/resource-center/online-account-tutorial "Online Account Tutorial")

[Pie Insurance profile](https://spot.insure/insurance-providers/pie-insurance)

## What Is Professional Errors and Omissions (E&O) Insurance?

Professional liability can help pay defense costs and covered losses when a client says your advice or service caused financial harm. If customers rely on your work, list every service you provide and check the claims-made reporting and prior-work terms. [8](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [9](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [10](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [11](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

## Key Differences in Professional Liability (E&O) Insurance

### Which Professional Work Is Named

Pie lists architects, contractors, attorneys, engineers, consultants, marketers, counselors, and real-estate agents as common E&O buyers, while Marsh McLennan Agency describes placement for organizations and names specialist professional lines. Ask which profession-specific form will respond to your work. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance")

### Placement Scope and Buying Route

Marsh McLennan Agency invites organizations to discuss placement with an adviser or specialist. Pie directs E&O buyers to start a quote through its website, giving you a different first step before you can compare proposed terms. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance")

## What to Confirm in Professional Liability (E&O) Insurance Quotes

- Which carrier and profession-specific form would Pie quote, and does it address your services? [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance")
- Which MMA specialist lines up with your profession, and what limits and exclusions would be proposed? [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

## Offering Details

| Criteria | Marsh McLennan Agency professional errors omissions (official overview) | Pie Errors and Omissions Insurance |
| --- | --- | --- |
| Role in This Line | Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | Pie says it helps small businesses get the best errors and omissions coverage 'from our insurance carrier partners,' identifying itself as an intermediary rather than the underwriter for this line. [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance") (Evidence: Company-reported; scope: Errors and Omissions product page as read on 2026-09-23..) |
| Issuing Insurer | Confirm in your quote. | The reviewed page refers only to 'our insurance carrier partners' and does not name a specific insurer for Pie's errors and omissions product. [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance") (Evidence: Not publicly disclosed; scope: Errors and Omissions product page as read on 2026-09-23..) |
| Who It’s For | Organizations seeking professional liability placement; source does not imply all professions share one policy. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | Pie names architects, contractors, attorneys, engineers, consultants, marketers, counselors, and real estate agents as professionals who often carry E&O insurance, and notes some states or clients require proof of coverage. [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance") (Evidence: Company-reported; scope: Errors and Omissions product page as read on 2026-09-23; not an exhaustive eligibility list..) |
| Coverage Features | The cited product page describes E&O and named specialist professional lines, including architects and engineers and lawyers professional liability; the overview does not treat them as one form. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | Pie describes errors and omissions insurance, also called professional liability insurance, as covering legal fees, costs, and damages for claims that a business's advice or services caused harm, including claims of inaccurate advice, misrepresentation, negligence, or violation of good faith, but says it does not protect against criminal prosecution. [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance") (Evidence: Company-reported; scope: Errors and Omissions product page as read on 2026-09-23; the issued policy controls actual insuring agreements and exclusions..) |
| Limits and Retentions | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) | The reviewed page does not publish limits, deductibles, or premium ranges for errors and omissions coverage. [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance") (Evidence: Not publicly disclosed; scope: Errors and Omissions product page as read on 2026-09-23..) |
| How to Apply | The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | Pie directs errors and omissions buyers to contact the company to start a quote through its website. [7](https://www.pieinsurance.com/errors-and-omissions-insurance "Errors and Omissions Insurance") (Evidence: Company-reported; scope: Errors and Omissions product page as read on 2026-09-23..) |

## Full Comparison

- [Marsh McLennan Agency vs Pie Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-pie-insurance): all coverage lines, business roles, service and claims.
- [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions): Professional liability can help pay covered defense costs and losses when a client says your advice or service caused financial harm; check services and reporting terms.
- [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions)
- [AIG vs Pie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-pie-insurance/professional-errors-omissions)
- [Alliance Risk vs Pie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-pie-insurance/professional-errors-omissions)
- [Aon vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/professional-errors-omissions)
- [At-Bay vs Pie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-pie-insurance/professional-errors-omissions)
- [Beazley vs Pie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-pie-insurance/professional-errors-omissions)

## Sources

### Marsh McLennan Agency

1. [Who We Are](https://www.marshmma.com/us/mma/about-us.html). Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role.. Accessed 2026-09-29.
2. [Small Business Insurance Solutions](https://www.marshmma.com/us/solutions/small-business.html). Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted.. Accessed 2026-09-29.
3. [Executive and Professional Liability | MMA](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html). Marsh McLennan Agency; E&O, architects and engineers, and lawyers professional lines are named in the policy suite.. Accessed 2026-09-30.

### Pie Insurance

4. [Legal](https://www.pieinsurance.com/legal). Pie Insurance; State Licenses; footer disclosure naming producer and workers’ compensation versus third-party underwriting roles. Accessed 2026-09-15.
5. [Workers’ Comp Insurance For Small Businesses](https://www.pieinsurance.com/workers-comp). Pie Insurance; Get a workers’ compensation quote online; insurance made for your small business; quote inputs; coverage description; quote-time and savings qualifications; AM Best link. Accessed 2026-09-16.
6. [Online Account Tutorial](https://www.pieinsurance.com/resource-center/online-account-tutorial). Pie Insurance; Payment-method updates; instant and custom certificates; policy information; document access; agent-handled custom certificate qualification. Accessed 2026-09-15.
7. [Errors and Omissions Insurance](https://www.pieinsurance.com/errors-and-omissions-insurance). Pie Insurance; Errors and Omissions Insurance hero: also known as professional liability insurance...; professions that often carry E&O; What's typically covered by errors and omissions insurance? Inaccurate advice, Misrepresentation, Negligence, Violation of good faith; Make sure you're covered: Start now. Accessed 2026-09-23.

### Professional Liability (E&O) Insurance Guide

8. [FAQ: Professional liability insurance](https://www.tdi.texas.gov/commercial/pl-faq.html). Texas Department of Insurance; What’s professional liability coverage?; What types of damages…; What’s general liability insurance?; Do I need professional liability… if I have general liability…?; Is professional liability insurance required?; Can a client require…?; What’s the difference between occurrence policies and claims-made policies. Accessed 2026-09-16.
9. [Professional liability insurance](https://www.iii.org/article/professional-liability-insurance). Insurance Information Institute; Opening paragraphs (professional services/advice and E&O name); Claims not covered by general liability; What types of businesses need professional liability insurance?; What’s covered… and what’s not (claims-made versus occurrence, defense and judgments, non-financial/intentional limits, BOP/in-home exclusion). Accessed 2026-09-16.
10. [Get business insurance](https://www.sba.gov/counseling/launch-your-business/#business-insurance). U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16.
11. [Professional Liability – US Direct Errors and Omissions Insurance](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf). Hiscox Inc. specimen; About this Policy / Coverage for Claims Made Against You; I.A Insuring Agreement; I.B Defense; I.C Settlement; II.A Notice of Claims; II.C Optional Extended Reporting Period; III.A, III.K, III.M, III.R, III.S Exclusions; IV.A–B Limits and Deductible; VI.O Professional Services; VI.U Wrongful Act. Accessed 2026-09-16.

Updated 2026-09-30. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

## Marsh McLennan Agency Reviews

Review Score: 8.2 / 10 from 2 rated sources, equally weighted.

There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years.

- Trustpilot: TrustScore 3.2 (out of 5); 1 reviews. Trustpilot profile for marshmma.com, MMA's own domain. Unclaimed; MMA has not invited reviews. Period: checked 2026-09-29. Checked 2026-09-29. [marshmma.com Trustpilot profile](https://www.trustpilot.com/review/marshmma.com)
- Trustpilot: TrustScore (Marsh brand) 1.3 (out of 5); 115 reviews. Trustpilot page for marsh.com, the global Marsh brand (mostly individual and non-US customers). This is a different entity from MMA. Period: checked 2026-09-29. Checked 2026-09-29. [Marsh Reviews](https://www.trustpilot.com/review/www.marsh.com)
- BBB: BBB business grade A. BBB San Diego-area profile for Marsh & McLennan Agency LLC (accredited). MMA has separate BBB profiles per office; Dayton and Schaumburg both show A+. Checked 2026-09-29. [Marsh & McLennan Agency LLC (San Diego) BBB](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103)
- BBB: Complaints 4. Same San Diego-area profile; zero customer reviews. No client-count denominator. Period: closed in the last three years (checked 2026-09-29). Checked 2026-09-29. [Marsh & McLennan Agency LLC — BBB Complaints](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/complaints); [Marsh & McLennan Agency LLC — BBB Reviews](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/customer-reviews)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/marsh-mclennan-agency/reviews).

## Pie Insurance Reviews

Review Score: 1.7 / 10 from 2 rated sources, equally weighted.

Pie’s service record raises clear concerns: elevated regulator complaints reported by NerdWallet, 1.7/5 on Trustpilot and an F from BBB. Investigate billing, cancellation and complaint handling before buying.

- Trustpilot: TrustScore 1.7 (5 stars); 666 reviews. Brand-level Trustpilot consumer reviews; policy product is generally identified as workers’ compensation, but reviewer policy/entity scope varies. Checked 2026-09-25. [Pie Insurance Reviews - Trustpilot](https://www.trustpilot.com/review/www.pieinsurance.com)
- BBB: BBB Rating F (BBB letter grade). BBB profile for commercial insurance services; BBB grade and complaint-response record, not policy performance measure. Period: BBB profile reports 15 complaints filed, 13 unanswered; complaint data, not reviews. Checked 2026-09-25. [Pie Insurance Services | BBB Business Profile](https://www.bbb.org/us/dc/washington/profile/commercial-insurance-services/pie-insurance-services-0241-236060990)

Reviewed 2026-09-25. [Read the sourced review](https://spot.insure/insurance-providers/pie-insurance/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/marsh-mclennan-agency-vs-pie-insurance/professional-errors-omissions.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://spot.insure/llms.txt)